<template>
  <el-dialog
    :title="formData.id?'编辑部门':'新增部门'"
    :visible="showDialog"
    width="50%"
    :destroy-on-close="true"
    @close="btnCancel"
  >
    <el-form ref="addDept" label-width="120px" :model="formData" :rules="rules">
      <el-form-item label="部门名称" prop="name">
        <el-input v-model="formData.name" style="width:80%" placeholder="1-10个字符" />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input v-model="formData.code" style="width:80%" placeholder="1-10个字符" />
      </el-form-item>
      <el-form-item label="部门负责人" prop="manager">
        <el-select v-model="formData.manager" style="width:80%" placeholder="请选择" @blur="checkManager">
          <el-option v-for="user in employeeList" :key="user.id" :label="user.username" :value="user.username" />

        </el-select></el-form-item>
      <el-form-item label="部门介绍" prop="introduce">
        <el-input v-model="formData.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
      </el-form-item>
    </el-form>
    <!-- el-dialog有专门放置底部操作栏的 插槽  具名插槽 -->
    <el-row slot="footer" type="flex" justify="center">
      <!-- 列被分为24 -->
      <el-col :span="6">
        <el-button type="primary" size="small" @click="btnOk">确定</el-button>
        <el-button size="small" @click.native="btnCancel">取消</el-button>
      </el-col>
    </el-row>
  </el-dialog>
</template>

<script>
import { getDepartment, addDepartment, getDepartmentDetail, updateDepartment } from '@/api/department'
import { getEmployeeSimple } from '@/api/employees'
export default {
  props: {
    showDialog: {
      type: Boolean,
      default: false
    },
    nodeData: {
      type: Object,
      required: true
    }
  },
  data() {
    const checkRepeatName = async(rule, val, callback) => {
      // 同一父部门下不能重名添加
      const { depts } = await getDepartment()

      let isRepeat
      if (this.formData.id) {
        // 编辑
        isRepeat = depts
          .filter(item => item.pid === this.nodeData.pid)
          .some(item => item.name === val && item.id !== this.nodeData.id)
      } else {
        // 新增
        isRepeat = depts
          .filter(item => item.pid === this.nodeData.id)
          .some(item => item.name === val)
      }

      isRepeat ? callback(new Error('同一父部门下不能重名')) : callback()
    }
    const checkRepeatCode = async(rule, val, callback) => {
      // 拿全部部门数据
      const { depts } = await getDepartment()

      let isRepeat
      if (this.formData.id) {
        // 编辑
        isRepeat = depts.some(item => item.code === val && item.id !== this.nodeData.id)
      } else {
        // 新增
        isRepeat = depts.some(item => item.code === val)
      }

      isRepeat ? callback(new Error('部门编码必须唯一')) : callback()
    }
    return {
      formData: {
        code: '',	// 部门编码，同级部门不可重复
        introduce: '',	// 介绍
        manager: '',	// 负责人名称
        name: '', // 部门名称
        pid: ''		//	父级部门ID
      },
      // 定义校验规则
      rules: {
        name: [{ required: true, message: '部门名称不能为空', trigger: 'blur' },
          { max: 10, message: '部门名称要求1-10个字符', trigger: 'blur' },
          { validator: checkRepeatName, trigger: 'blur' }],
        code: [{ required: true, message: '部门编码不能为空', trigger: 'blur' },
          { max: 10, message: '部门编码要求1-10个字符', trigger: 'blur' },
          { validator: checkRepeatCode, trigger: 'blur' }],
        manager: [{ required: true, message: '部门负责人不能为空', trigger: 'blur' }],
        introduce: [{ required: true, message: '部门介绍不能为空', trigger: 'blur' },
          { trigger: 'blur', max: 300, message: '部门介绍要求1-50个字符' }]
      },

      employeeList: [] // 负责人
    }
  },
  async created() {
    this.employeeList = await getEmployeeSimple()
  },
  methods: {

    checkManager() { // 部门负责人
      setTimeout(() => {
        this.$refs.addDept.validateField('manager')
      }, 100)
    },

    // 点击确定新增数据
    async btnOk() {
      // 校验
      await this.$refs.addDept.validate()
      if (this.formData.id) {
        // 编辑
        await updateDepartment(this.formData)
      } else {
        // 发请求   (新增)
        await addDepartment({
          ...this.formData,
          pid: this.nodeData.id
        })
      }

      // 提示用户
      this.$message.success('操作成功')
      // 页面需要更新
      this.$emit('addDepartment')
      // 关闭弹窗
      //   this.$emit('closeDialog')
      this.$emit('update:showDialog', false)
    },

    btnCancel() {
      // 1. 清理数据和校验错误
      // resetFields 函数属于elementui功能
      // 只能清空错误
      // 并恢复原来绑定到表单中的初始值
      // 回显的额外数据并不能清空掉
      this.formData = {
        code: '',
        name: '',
        manager: '',
        introduce: '',
        pid: ''
      }

      // 清理数据和校验错误
      this.$refs.addDept.resetFields()
      // 关闭窗口
      this.$emit('update:showDialog', false)
    },

    async getDepartmentDetail(id) {
      this.formData = await getDepartmentDetail(id)
    }
  }
}
</script>

<style>

</style>
